Eyesight protection device, eyesight protection system and detection method for eyesight protection device

Abstract

The present disclosure provides an eyesight protection device, an eyesight protection system and an detection method for the eyesight protection device, which belongs to the technical field of communication, and can solve some problems in the prior art. The present disclosure provides an eyesight protection device, which includes: a millimeter-wave radar detection circuit, a control circuit and an alarm circuit. The millimeter-wave radar detection circuit is configured to detect a distance between a user and a reading material read by the user. The control circuit is configured to generate a first control signal at least when it is determined that the distance detected by the millimeter-wave radar detection circuit is smaller than a first predetermined value. The alarm circuit is configured to send out an alarm signal in response to the first control signal.

What is claimed is: 
     
       1. An eyesight protection device, comprising a millimeter-wave radar detection circuit, a control circuit, an alarm circuit, an accelerometer, and a gyroscope, wherein
 the millimeter-wave radar detection circuit is configured to detect a distance between a user and a reading material read by the user, 
 the control circuit is configured to generate a first control signal at least in response to the distance detected by the millimeter-wave radar detection circuit is smaller than a first predetermined value, and 
 the alarm circuit is configured to send out an alarm signal in response to the first control signal, 
 the accelerometer comprises an acceleration detection circuit and a frequency conversion circuit, 
 the acceleration detection circuit is configured to detect an acceleration of the reading material, 
 the control circuit is configured to generate a second control signal in response to the acceleration detected by the acceleration detection circuit is smaller than a third predetermined value, 
 the frequency conversion circuit is configured to change a frequency at which the acceleration detection circuit detects the acceleration in response to the second control signal, 
 the gyroscope is configured to detect angle information of the millimeter-wave radar detection circuit, and 
 the control unit is configured to switch an operation state of the eyesight protection device from a sleep state to an operation state in response to both of the angle information detected by the gyroscope and the acceleration detected by the acceleration detection circuit are not zero. 
 
     
     
       2. The eyesight protection device of  claim 1 , wherein the control circuit is configured to generate the first control signal when it is determined that a duration, during which the distance detected by the millimeter-wave radar detection circuit is less than the first predetermined value, is greater than a second predetermined value. 
     
     
       3. The eyesight protection device of  claim 1 , wherein the accelerometer is communicatively coupled to the control circuit via an I 2 C interface. 
     
     
       4. The eyesight protection device of  claim 1 , further comprising a storage circuit configured to store firmware data of the control circuit and the distance detected by the millimeter-wave radar detection circuit. 
     
     
       5. The eyesight protection device of  claim 4 , wherein
 the storage circuit comprises a first flash and a second flash, 
 the first flash is configured to store the firmware data of the control circuit, and 
 the second flash is configured to store the distance detected by the millimeter-wave radar detection circuit. 
 
     
     
       6. The eyesight protection device of  claim 5 , wherein the storage circuit is communicatively coupled to the control circuit via a QSPI interface. 
     
     
       7. The eyesight protection device of  claim 1 , further comprising a first power circuit configured to provide power to the eyesight protection device, wherein
 the first power circuit further comprises a first power sub-circuit and/or a second power sub-circuit, 
 the first power sub-circuit is configured to supply power to the control circuit, and 
 the second power sub-circuit is configured to supply power to the first power sub-circuit and the control circuit. 
 
     
     
       8. The eyesight protection device of  claim 7 , wherein
 the first power sub-circuit is configured to be communicatively coupled to the control circuit via a PMU interface, and 
 the second power sub-circuit is communicatively coupled to the control circuit via a VBUS interface. 
 
     
     
       9. The eyesight protection device of  claim 1 , further comprising: a USB circuit and a Bluetooth circuit, wherein
 the eyesight protection device is communicatively coupled to a user terminal via the USB circuit and the Bluetooth circuit, such that data including the distance is transmitted from the eyesight protection device to the user terminal. 
 
     
     
       10. The eyesight protection device of  claim 1 , further comprising a WIFI circuit and a mobile communication circuit, wherein
 the eyesight protection device is communicatively coupled to a network device via the WIFI circuit and the 4G circuit, such that data is transmitted between the network device and the eyesight protection device. 
 
     
     
       11. The eyesight protection device of  claim 1 , wherein the gyroscope is communicatively coupled to the control circuit via an SPI interface or an I 2 C interface. 
     
     
       12. The eyesight protection device of  claim 1 , wherein the alarm circuit comprises a buzzer communicatively coupled to the control circuit. 
     
     
       13. An eyesight protection system, comprising the eyesight protection device of  claim 1  and a user terminal, wherein
 the eyesight protection device is configured to detect data of the user, 
 the user terminal is configured to display the data of the user on the user terminal, and 
 the eyesight protection device is communicatively coupled to the user terminal. 
 
     
     
       14. The eyesight protection system of  claim 13 , further comprising a network device configured to: be communicatively coupled to a plurality of eyesight protection devices for a plurality of the users; and store and analyze the data of the plurality of the users. 
     
     
       15. A detection method for an eyesight protection device, comprising:
 detecting, by a millimeter-wave radar detection circuit, a distance between a user and a reading material read by the user; 
 generating, by a control circuit, a first control signal, at least in response to the distance detected by the millimeter-wave radar detection circuit is smaller than a first predetermined value; and 
 sending out, by an alarm circuit, an alarm signal in response to the first control signal, wherein 
 the detection method further comprises: 
 detecting, by an acceleration detection circuit of an accelerometer, an acceleration of the eyesight protection device; 
 generating, by the control circuit, a second control signal in response to the acceleration detected by the acceleration detection circuit is smaller than a third predetermined value; 
 changing, by a frequency conversion circuit of the accelerometer, a frequency at which the acceleration detection circuit detects the acceleration in response to the second control signal; 
 detecting, by a gyroscope, angle information of the millimeter-wave radar detection circuit; and 
 switching, by the control unit, an operation state of the eyesight protection device from a sleep state to an operation state, in response to both of the angle information detected by the gyroscope and the acceleration detected by the acceleration detection circuit are not zero. 
 
     
     
       16. The detection method of  claim 15 , wherein detecting, by the millimeter-wave radar detection circuit, the distance between the user and the reading material read by the user, comprises:
 acquiring a data value by processing original data detected by the millimeter-wave radar detection circuit, and 
 generating the distance by classifying and filtering the data value.